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Three-point joint coupling hook for towing vehicle

A connecting hook and point joint technology, applied in the field of connecting hooks

Active Publication Date: 2008-12-10
LH ELEVATOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The lever cannot be pulled out along this path, but must be raised above the pin

Method used

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  • Three-point joint coupling hook for towing vehicle
  • Three-point joint coupling hook for towing vehicle
  • Three-point joint coupling hook for towing vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] As shown, the connecting hook of the present invention does not show its cover, which is welded on said connecting hook in the finished product. Additionally, the attachment hooks are shown smaller than in real life.

[0013] The connecting hook itself is also fixed on the drawbar by welding. As shown in FIG. 1 , the connecting hook comprises a forged body 1 in which a connecting throat 27 and a housing 25 are formed. The connecting throat 27 is conventional and is arranged exclusively to accommodate the joint ball 11 . Usually, the joint ball is permanently mounted on the device to be jointed, or is mounted on a pin in a conventional three-point joint. In this way, the quick connection can be realized without the joint ball, but it is not recommended. Furthermore, possible slight differences in angle between pin and drawbar are eliminated by means of an engaging ball. In the figures, the bonding ball is marked with the reference numeral 11 .

[0014] The locking m...

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PUM

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Abstract

The invention relates to a three-point jointed connection hook used for a tractor. The connection hook includes a connection larynx (27), a shell (25), a brake plate (2), a spring (8) which is arranged to pull the brake plate (2) to a locking position and an operation rod (3). The brake plate (2) is arranged to be manually opened by virtue of the operation rod; the brake plate (2) and the operation rod (3) are operated relative to the connection hook by virtue of an operation surface at the locking position; the supporting surface of the brake plate (2) and the operation rod (3) and a corresponding surface in the shell are together arranged to generate an acting force which locks the brake plate (2); wherein, the locking surface connected with the operation rod (3) stops the rotation of the operation rod; a supporting surface relative to the brake plate of the operation rod (3) is elongate which leads the operation rod (3) to be opened in a smaller degree, thus eliminating the opening force (FL) of a jointing ball (11).

Description

technical field [0001] The invention relates to a coupling hook for a three-point joint for a tractor, of the type described in the preamble of claim 1 . In simplified form, the connecting hook belongs to the assembly in which the brake disc and the operating lever are hinged on the assembly and can be moved by being guided by the surface of the housing, and the locking force of the brake disc is directed towards the housing through the operating lever . This assembly is different from the connecting hook, in which the brake pad, the operating lever or the auxiliary arm hinged on both is hinged on the housing, in that only the brake pad is in the correspondence between its locking surface and the housing Basic locking with the aid of the surface. Background technique [0002] US Pat. No. 4,157,838 (DE 2645479) discloses a connecting hook in its preface. The brake pad and lever are hinged to each other, preventing them from rotating relative to each other beyond the set ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60D1/07
Inventor P·维基
Owner LH ELEVATOR